Brexit symbolizes the new worries about internal European mobility. At the same time, the additional fears generated by the refugee crisis crowds out the necessary debate about new labor migration to Europe. Against this background, POP-Researchers Martin Kahanec and Klaus F. Zimmermann launch their new book on October 6, 2017 in Budapest dealing with these issues. The lessons drawn rely on the research work of a multi-country project team providing empirical evidence on European migration in the Great Recession and afterwards for many countries.